221025280

素因数分解:

$2^{10}\times 5^1\times 7^2\times {\mathrm{881}}^1$

素因数の和:920

約数の個数: 132

約数和(自身を含む): 617465268

約数和(自身を除く): 396439988

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 512, 560, 640, 784, 881, 896, 980, 1024, 1120, 1280, 1568, 1762, 1792, 1960, 2240, 2560, 3136, 3524, 3584, 3920, 4405, 4480, 5120, 6167, 6272, 7048, 7168, 7840, 8810, 8960, 12334, 12544, 14096, 15680, 17620, 17920, 24668, 25088, 28192, 30835, 31360, 35240, 35840, 43169, 49336, 50176, 56384, 61670, 62720, 70480, 86338, 98672, 112768, 123340, 125440, 140960, 172676, 197344, 215845, 225536, 246680, 250880, 281920, 345352, 394688, 431690, 451072, 493360, 563840, 690704, 789376, 863380, 902144, 986720, 1127680, 1381408, 1578752, 1726760, 1973440, 2255360, 2762816, 3157504, 3453520, 3946880, 4510720, 5525632, 6315008, 6907040, 7893760, 11051264, 13814080, 15787520, 22102528, 27628160, 31575040, 44205056, 55256320, 110512640, 221025280]

約数ペア:

[(1, 221025280), (2, 110512640), (4, 55256320), (5, 44205056), (7, 31575040), (8, 27628160), (10, 22102528), (14, 15787520), (16, 13814080), (20, 11051264), (28, 7893760), (32, 6907040), (35, 6315008), (40, 5525632), (49, 4510720), (56, 3946880), (64, 3453520), (70, 3157504), (80, 2762816), (98, 2255360), (112, 1973440), (128, 1726760), (140, 1578752), (160, 1381408), (196, 1127680), (224, 986720), (245, 902144), (256, 863380), (280, 789376), (320, 690704), (392, 563840), (448, 493360), (490, 451072), (512, 431690), (560, 394688), (640, 345352), (784, 281920), (881, 250880), (896, 246680), (980, 225536), (1024, 215845), (1120, 197344), (1280, 172676), (1568, 140960), (1762, 125440), (1792, 123340), (1960, 112768), (2240, 98672), (2560, 86338), (3136, 70480), (3524, 62720), (3584, 61670), (3920, 56384), (4405, 50176), (4480, 49336), (5120, 43169), (6167, 35840), (6272, 35240), (7048, 31360), (7168, 30835), (7840, 28192), (8810, 25088), (8960, 24668), (12334, 17920), (12544, 17620), (14096, 15680)]